How many watts does GeForce RTX 4080 use?
Short answer
GeForce RTX 4080 draws up to 320 W under gaming load — that is its rated TDP; short spikes can reach about 448 W. A build with a mid-range CPU needs a 700 W power supply or more. At 3 h of gaming a day the card uses ≈28.8 kWh a month (≈$ 4.90).
| TDP (rated, gaming) | 320 W |
|---|---|
| Graphics card spikes (estimate) | up to 448 W |
| PSU with a mid-range CPU (105 W) | 700 W |
| FPS per watt (1440p, High) | 0.99 FPS/W |
| Electricity per month (3 h/day) | $ 4.90 (28.8 kWh) |
Looking for something else? What PSU RTX 4080 needs · How much gaming electricity costs
What GeForce RTX 4080 costs to run per month
Graphics card only, per month:
$ 4.90
28.8 kWh
Calculation: 320 W (TDP under gaming load) × hours × 30 days × rate. Default rate is $ 0.17 per kWh; replace it with yours.
Power use and efficiency of GeForce RTX 4080 alternatives
| Graphics card | TDP | Difference | FPS (1440p) | FPS/W | PSU (mid-range CPU) | |
|---|---|---|---|---|---|---|
| GeForce RTX 4080 | 320 W | — | 318 | 0.99 | 700 W | |
| GeForce RTX 4080 Super | 320 W | 0 W | 331 | 1.03 | 700 W | Compare → |
| Radeon RX 7900 XTX | 355 W | +35 W | 323 | 0.91 | 750 W | Compare → |
| GeForce RTX 5070 Ti | 300 W | -20 W | 307 | 1.02 | 650 W | Compare → |
| Radeon RX 9070 XT | 304 W | -16 W | 300 | 0.99 | 650 W | Compare → |
| GeForce RTX 5080 | 360 W | +40 W | 353 | 0.98 | 750 W | Compare → |
FPS is the average across 8 popular games at 1440p High from the unified FPSHQ model (real measurements where available); FPS/W = FPS / TDP. How FPS is calculated
Key figures
Unique FPSHQ metrics from this page's data
320 W
TDP (rated, gaming)
up to 448 W
Graphics card spikes (estimate)
700 W
PSU with a mid-range CPU (105 W)
0.99 FPS/W
FPS per watt (1440p, High)
$ 4.90 (28.8 kWh)
Electricity per month (3 h/day)
In short
How many watts does GeForce RTX 4080 use?
In games — up to 320 W (rated TDP). Short spikes under load can reach ~448 W, which matters when choosing a power supply.
- TDP (rated, gaming)
- 320 W
- Graphics card spikes (estimate)
- up to 448 W
- PSU with a mid-range CPU (105 W)
- 700 W
- FPS per watt (1440p, High)
- 0.99 FPS/W
Frequently asked questions
How many watts does GeForce RTX 4080 use?
In games — up to 320 W (rated TDP). Short spikes under load can reach ~448 W, which matters when choosing a power supply.
How much power does GeForce RTX 4080 use at idle?
Our database has no separate idle measurement for GeForce RTX 4080. At idle and during video playback graphics cards use only a small fraction of their TDP (320 W), so your electricity bill mostly depends on gaming hours.
How much does electricity for GeForce RTX 4080 cost per month?
At 3 hours of gaming a day and a rate of $ 0.17 per kWh — about $ 4.90 a month for the graphics card alone (28.8 kWh). Recalculate for your hours and rate with the calculator on this page.
How many watts PSU does GeForce RTX 4080 need?
From 700 W for a build with a mid-range CPU: card TDP 320 W, short spikes up to ~448 W, plus the rest of the system and 30% headroom.
Which is more efficient: GeForce RTX 4080 or GeForce RTX 4080 Super?
By spec GeForce RTX 4080 draws 320 W and GeForce RTX 4080 Super draws 320 W. Efficiency by the unified FPSHQ model: 0.99 vs 1.03 FPS per watt (1440p, High, popular games).